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Product Design > Thermo Plastic Polymers > Flashcards

Thermo Plastic Polymers Flashcards

1
Q

What are polymers made from

A

Monomers

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2
Q

Do Polymer chains have cross links?

A

No, that’s Thermo-setting Polymers

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3
Q

Name three Thermoplastics…

A

ABS,

PET,

PMMA (acrylic)

Polypropylene,

High Impact Polystyrene,

Expanded Polystyrene,

Low Density Polystyrene,

High Density Polystyrene,

Nylon,

UPVC

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4
Q

What are most synthetics made from?

A

Oil

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5
Q

Are Thermoplastics recyclable?

A

Yes, but they take 100+ years to degrade naturally

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6
Q

What is the symbol for Thermoplastics?

A

5 PP

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7
Q

Name another Thermoplastic…

A

ABS,

PET,

PMMA (acrylic),

Polypropylene,

High Impact Polystyrene,

Expanded Polystyrene,

Low Density Polystyrene,

High Density Polystyrene,

Nylon,

UPVC

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8
Q

What are the properties of all Thermoplastics?

A

Remouldable, Recyclable, Self coloured, Self finishing,

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9
Q

What are the properties of ABS (***)

A

ABS is hard and durable,

ABS is shiny and multicoloured,

ABS is very versatile,

However ABS is very expensive

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10
Q

Name an use of ABS…

A

High quality toys,

Mobile phones,

Safety helmets,

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11
Q

What are the properties of PET (*) ?

A

PET can come clear/multicoloured,

PET has a crinkly (cheap) feel,

PET is very strong despite thinness,

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12
Q

Where might you find something made of PET?

A

At a supermarket/food outlet.

PET is mainly used for bottles/food containers

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13
Q

What are the properties of Polypropylene (***) ?

A

Polypropylene is soft and supple,

Polypropylene is tough and durable (has a longlife)

Polypropylene is very expenisve

Polypropylene is the only plastic that can form an integeral hinge

Polypropylene is colourful

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14
Q

What are the uses of Polypropylene?

A

Sandwich boxes and school chairs

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15
Q

What is an integeral hinge?

A

You can crush the plastic and its bends

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16
Q

Name the properties of LDPE (***) …

A

LDPE can be made very thin (0.1mm)

LDPE is clearish/coloured

LDPE is disposable

17
Q

Where could you find LDPE?

A

In a shop, LDPE is commonly used for carrier bags.

LDPE can also be used for toothpaste tubes

18
Q

What are the properties of Polystyrene? (**)

A

Poylstyrene is crinkly

Poylstyrene is easy to manufacture

Poylstyrene is very cheap

19
Q

What are the commercial uses of Poylstyrene?

A

Yoghurt pots; disposable food containers

20
Q

What are the properties of PMMA?

A

PMMA is also known as acrylic

PMMA comes in every colour

PMMA is optically clearer than glass

PMMA has a high quality feel and high shine finish

PMMA is very Strong

HOWEVER PMMA SCRATCHES

21
Q

What is Acrylic used for?

A

Head light lens and shop signs

22
Q

What are the properties of HIP?

A

High Impact Polystyrene has a low melting temperaure (95^)

High Impact Polystyrene is to easy mold,

High Impact Polystyrene is light and strong

23
Q

What is High Impact Polystyrene used for?

A

(Cheap) toys

24
Q

Name the properties of Expanded Polystyrene…

A

Expanded Polystyrene is light (80% air)

Expanded Polystyrene is buyant

25
Q

What are the uses of Expanded Polystyrene?

A

Packaging, insulation and foam cups from water fountains

26
Q

What the properties of HDPE? What HDPE used for?

A

HDPE is (semi) disposable and is clearish/coloured. HDPE is used for milk bottles.

27
Q

What are the properties of Nylon?

A

Nylon is self lubricating

Nylon is hardwearing

28
Q

What main industry uses Nylon?

A

Clothing industry uses Nylon to create fabric. Mechanics sometimes use Nylon for gears

29
Q

Name a property and use of UPVC`

A

UPVC is hard/rigid and is used for winsows, gutters and pipes

30
Q

Name a property and use of PVC…

A

PVC is soft and squidy. PVC is used for tape and hose pipes

31
Q

Name three additives…

A

Plasticizer,

Filler,

Stabilizer,

Biobatch

32
Q

why would you add plasticizer to a polymer?

A

to change it’s natural material property (makes polymers more flexible and soft)

33
Q

What is a thermoplastic?

A

A thermoplastic has polymer chains which has no cross links.

34
Q

Name an additive you can use to lower the costs…

A

Filler. Added to bulk out the plastic, filler means you need less polymer.

35
Q

How do you make a thermo polymer (in terms of additives)

A

You add biobatch, this shortens the plastics shelf life.

36
Q
A

Product Design (11 decks)

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